WO2021032119A1

WO2021032119A1 - Body weight measurement apparatus

Info

Publication number: WO2021032119A1
Application number: PCT/CN2020/110012
Authority: WO
Inventors: 齐玮; 何俊杰
Original assignee: 惠州市开蒙医疗科技有限公司
Priority date: 2019-08-20
Filing date: 2020-08-19
Publication date: 2021-02-25
Also published as: CN210375380U

Abstract

A body weight measurement apparatus, relating to the field of weighing. The apparatus comprises a weighing platform (1), and further comprises a human body detection module (52) for acquiring the distance between a user in a set direction and the weighing platform (1); a weighing sensor (51) for acquiring weighing information of the user; a processing module (6) for comparing the distance between the user and a body weight measurement apparatus with a set value, and controlling, when the distance is less than the set value, the weighing sensor (51) to be initiated; and a display module (4) for displaying a weighing result. According to the apparatus, the human body detection module (52) detects whether there is a person in the set direction, and acquires the distance between the user in the direction and the body weight measurement apparatus; the processing module (6) determines, when the distance is less than the set value, that the user has a usage requirement, and then initiates the weighing sensor (51) to measure a body weight, and the processing module (6) calculates the weighing result; and the display module (4) displays same. The apparatus avoids the inconvenience in observation caused due to the fact that the user is standing in the wrong direction and initiates the body weight measurement apparatus for measurement, thereby making same convenient to use.

Description

Weight measuring device

Technical field

The utility model relates to weight measurement, more specifically, it relates to a weight measurement device.

Background technique

With the continuous development of society and the continuous improvement of people's living standards, people pay more and more attention to their own health. Body weight is an important indicator that reflects whether the daily dietary intake is up to standard. When a person’s weight is too low, it means that the person’s daily dietary intake is too low and their energy intake fails to meet their own energy expenditure; When the weight is too high, it means that the person's daily dietary intake is too high, and his energy intake exceeds his own energy expenditure. Moreover, when a person's weight changes significantly in a short period of time, it is likely that the person is suffering from a disease. Therefore, weight is an important parameter to measure people's health.

At present, there are many types of weight measuring instruments on the market, which usually include a weighing platform. A weighing sensor is installed on the weighing platform, and the detection result is displayed through a display module. At work, after detecting the load of the weighing platform, start the instrument and perform measurement.

Although this method can start and weigh quickly in time, the display module needs to face the direction of the digital display when displaying the weighing result. If the user stands in the wrong direction, the measuring instrument starts as usual, although it can If the product is measured, the observation of the weighing result may not be convenient enough, and there is still room for improvement in existing products.

Utility model content

In view of the shortcomings of the prior art, the first purpose of the present invention is to provide a working method of the weight measuring instrument, which has the advantage of convenient measurement.

In order to achieve the above purpose, the present invention provides the following technical solutions:

A weight measuring device includes a weighing platform on which users can stand, and also includes

The human body detection module is used to obtain the distance between the user and the weighing platform in the set direction;

The weighing sensor is used to obtain the weighing information of the user after it is started;

The processing module is used to compare the distance between the user and the weight measuring device and the size of the set value, and control the load cell to start when the distance is less than the set value;

The display module is used to display the weighing result.

With the above technical solution, when using, the human body detection module detects whether there is a person in the set direction, and obtains the distance between the user in the direction and the weight measuring instrument. The processing module determines when the measured distance is less than the set value The user needs to use the weighing sensor to start the weight measurement, and the processing module calculates the weighing result and displays it by the display module. The whole method avoids the observation inconvenience caused by the user standing in the wrong direction and starting the instrument for measurement, and brings convenience to use.

Using the above technical solution,

Further, the orientation of the human body detection module is opposite to that of the user.

With the above technical solution, the human body detection module is set in this direction to detect whether there is a user standing on the weighing platform in the correct reverse direction.

Further, the human body detection module includes a BS45F3232 chip.

Using the above technical solution, the human body detection module adopts the BS45F3232 proximity sensing MCU, which integrates the active IR proximity sensing circuit. The product is small in size and low in energy consumption.

Further, the bottom side of the weighing platform is provided with an accommodating cavity, the inner wall of the accommodating cavity is provided with a number of blind holes that transmit light to the top side of the weighing platform, and the display device is arranged in the accommodating cavity and passes through the blind The hole shows the weighing result to the top of the weighing platform.

Using the above technical solution, an accommodating cavity is opened on the bottom side of the weighing platform for accommodating electronic components, and a blind hole is provided on the inner wall of the accommodating cavity, and the display device is arranged in the blind hole, through the blind hole to the weighing platform The top side displays the weighing result, so that other components such as the display device are hidden in the weighing platform, and when the display device is not displayed, the product as a whole appears as a platform, which is easy to match the environment.

Further, the display module includes a plurality of light emitting LEDs arranged on the circuit board and extending into the blind hole.

By adopting the above technical solution, the LED emits light through the blind hole, and then forms different display numbers to display the weighing result, saving cost.

Further, the number of the weighing sensors is 4, which are respectively arranged at the corners of the weighing platform.

By adopting the above technical solution, multiple weighing sensors are used to form a weighing bridge to measure weight, and the measurement is more accurate, and the weighing sensors are arranged at corners to increase the force arm of the measurement, and further enhance the accuracy of the measurement.

Further, the load cell is electrically connected with a voltage stabilizing circuit for providing a stable voltage to the load cell.

By adopting the above technical scheme, a stable voltage is provided to the load cell through a voltage stabilizing circuit, so as to avoid errors caused by inaccurate voltages.

Further, a fluorescent block is arranged on the inner wall of the blind hole, and a photochromic cover is sleeved on the periphery of the fluorescent block. The photochromic cover becomes transparent after being illuminated by the display module for a standard time period, wherein the standard time period is less than a preset time period .

Using the above technical solution, when the actual device displays the weighing result, if the display time reaches the standard time, the photochromic cover will change from opaque to transparent, and the light will be irradiated on the fluorescent block. The fluorescent block absorbs the light. After the display time of the display device reaches the preset time and the display stops, the fluorescent block starts to emit light at this time, and the display time of the weighing result becomes longer, which has the effect of energy saving.

Further, the inner wall of the blind hole is coated with a reflective coating.

By adopting the above technical scheme, a reflective coating is applied to the inner wall of the blind hole to improve display brightness and enhance light utilization.

In summary, the utility model has the following beneficial effects:

1. Detect whether there is a person in the set direction, and obtain the distance between the user and the weight measuring instrument in this direction. When the measured distance is less than the set value, it is judged that the user has a need for use, and then the weight measuring instrument is started to perform weight Measurement, the whole method avoids the observation inconvenience caused by the user standing in the wrong direction and starting the instrument for measurement, which brings convenience to use;

2. An accommodating cavity is opened on the bottom side of the weighing platform for accommodating electronic components, and a blind hole is arranged on the inner wall of the accommodating cavity, and the display device is set in the blind hole, and displays to the top side of the weighing platform through the blind hole The weighing result hides other components such as the display device in the weighing platform, and when the display device is not displayed, the product appears as a platform as a whole, which is easy to match the environment.

Description of the drawings

Figure 1 is a flowchart of the working method of the weight measuring instrument in the utility model;

Figure 2 is the principle block diagram of the weight measuring instrument in the utility model;

Figure 3 is a schematic structural view of the top side of the weight measuring device in the utility model;

Figure 4 is a schematic structural view of the bottom side of the weight measuring device in the present invention;

Figure 5 is an exploded schematic diagram of the weight measuring device in the utility model;

Figure 6 is a functional block diagram of the weight measuring device in the utility model;

Fig. 7 is a schematic diagram for illustrating the blind hole and the internal components of the blind hole.

In the figure: 91, processor; 92, memory; 1, weighing platform; 11, electrical box; 12, back cover; 13, circuit board; 2, containing cavity; 3, blind hole; 4, display module; 41 , Drive circuit; 51, weighing sensor; 52, human body detection module; 6, processing module; 7, voltage regulator circuit; 8, fluorescent block; 81, photochromic cover.

detailed description

The following describes the utility model in detail with reference to the drawings and embodiments.

This specific embodiment is only an explanation of the utility model, and it is not a limitation of the utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contribution as needed, but as long as the utility model is used The scope of the new claims is protected by the patent law.

Example 1

A working method of a weight measuring instrument, referring to FIG. 1, includes steps S101 to S103.

Step S101: Obtain the distance between the user and the weight measuring instrument in the set direction.

Step S102: If the distance between the user and the weight measuring instrument is less than the set value.

Step S103: Start the weight measuring instrument.

In step S101, it is detected whether there is a user in the setting direction of the weight measuring instrument, and the distance between the user and the weight measuring instrument is obtained, and the setting direction is the direction facing the user. After standing on the weighing platform 1, you can directly observe the weighing display result.

In step S102, the distance between the user and the weight measuring instrument is compared with the preset value. When the distance is less than the set value, it is determined that the user will use the weight measuring instrument. At this time, step S103 is entered to start weighing. The weighing function of the measuring instrument.

The working method of the weight measuring instrument also includes: obtaining weighing information of the weight carried by the weighing platform 1, and the weighing information includes 4 sets of measurements at the corners of the weighing platform 1; and then calculating the weighing result based on the weighing information; and Display the calculated weighing result.

Obtaining weighing information at the corners of the weighing platform 1 increases the detection force arm, which helps to improve the detection accuracy. In addition, the weighing result is calculated comprehensively through the four groups of weighing information, and the weighing is more accurate.

When displaying the calculated weighing result,

If there is any weighing result continuously displayed for the first preset duration, it is judged that the weighing is stable at this time, and the weighing result will continue to be displayed until the total display duration reaches the second preset duration, where the second preset duration Greater than the first preset duration.

After the weighing result is stable, when the displayed time reaches the first preset time, it is judged that the result is the final weighing result, and it continues to be displayed until the second preset time is reached, saving power .

Example 2

A weight measuring instrument, referring to FIG. 2, includes a processor 91 and a memory 92, and the memory 92 stores an instruction set for the processor 91 to call to realize the following functions:

Get the distance between the user and the weight measuring instrument in the set direction;

If the distance between the user and the weight measuring instrument is less than the set value;

Start the weight measuring device.

Obtain the weighing information of the weight bearing the weighing platform 1, the weighing information includes 4 groups measured at the corners of the weighing platform 1; calculate the weighing result based on the weighing information; and combine the calculated weighing result To display.

When displaying the calculated weighing result, if any weighing result continues to be displayed for the first preset duration, it is judged that the weighing is stable at this time, and the weighing result continues to be displayed until the total display duration reaches The second preset duration, where the second preset duration is greater than the first preset duration.

Example 3

A storage medium storing a computer program for computer execution to realize the functions included in the working method of the weight measuring instrument in Embodiment 1.

Example 4

A body weight measuring device, referring to Figures 3, 4 and 5, includes a weighing platform 1, and an accommodating cavity 2 is opened on the bottom side of the weighing platform 1 for placing an electrical box 11 for accommodating electronic components. Set the back cover 12 on the back.

5, the inner wall of the accommodating cavity 2 is provided with a number of blind holes 3 that transmit light to the top side of the weighing platform 1. In this embodiment, the weighing platform 1 is a bamboo board, and the inner wall of the accommodating cavity 2 is provided with blind holes 3 Then, the thickness of the bamboo board becomes thinner, and the light can be transmitted from the blind hole 3 to the top side of the weighing platform 1.

A circuit board 13 is fixed at the bottom of the electrical box 11, and the circuit board 13 is provided with a display module 4 for displaying the weighing result. In this embodiment, the display module 4 is a light emitting LED extending into the blind hole 3, and the light emitting LED emits The light passes through the blind hole 3 and the transparent film at the bottom of the blind hole 3 and then radiates outward. In this embodiment, the blind holes 3 enclose a number of Japanese-shaped display patterns, and light passes through different blind holes 3 to form different display numbers.

5 and 6, the bottom side of the weighing platform 1 is provided with a weighing sensor 51, which is used to output a measurement signal corresponding to the load-bearing size after being started. In this embodiment, the weighing sensor 51 adopts a four-angle sensor. 4, respectively set at the corners of the weighing platform 1 to increase the force arm detected by the sensor to enhance the detection accuracy.

In order to further improve the detection accuracy, the load cell 51 is electrically connected with a voltage stabilizing circuit 7 for providing a stable voltage to the load cell 51. In this embodiment, the voltage stabilizing circuit 7 includes two parts, one part is a 7533 chip, and the other part is XC6204 chip.

The bottom side of the weighing platform 1 is also provided with a human body detection module 52, which is located on the side away from the display module 4, and is used to obtain the distance between the user and the weight measuring device in the away direction. Among them, the human body detection module 52 adopts the BS45F3232 proximity sensing MCU, which integrates the active IR proximity sensing circuit, and its product is small in size and low in energy consumption.

The load cell 51 is electrically connected to the processing module 6, and the processing module 6 is used to compare the distance between the user and the weight measuring device and the set value, and control the load cell 51 to start when the distance is less than the set value; and, Calculate the weighing result based on the obtained weighing information.

The processing module 6 uses the CSU18M chipset. After the pressure sensor at the bottom of the weighing platform 1 receives pressure, it outputs the corresponding voltage signal. The voltage signal is amplified by the amplifying unit, and then transmitted to the processing module 6 by the AD conversion unit. The processing module 6 is based on The signal change of the pressure sensor calculates the weight of the human body. In addition, the CSU18M chip also supports data analysis of body fat, heart rate, etc., with rich function expansion.

In addition, the processing module 6 is electrically connected to the driving circuit 41 that drives the display module 4 to display the weighing result of the preset duration. In this embodiment, the driving circuit 41 is a tm1629a chip. The driving circuit 41 drives the display module 4 to display the duration for a preset duration.

Referring to Fig. 7, the inner wall of the blind hole 3 is provided with a fluorescent block 8, which is specifically installed by pins, and a photochromic cover 81 is sleeved around the fluorescent block 8. Fig. 4 of the specification illustrates the structure of the fluorescent block 8. It is shown in section 81, and the actual structure is that the photochromic cover 81 completely covers the fluorescent block 8 and the light. The photochromic cover 81 is made of a Schiff base or octane-based compound, which becomes transparent after being irradiated by the display module 4 for a standard length of light. The standard time length is less than the preset time length, that is, it can ensure that the photochromic cover 81 becomes transparent, and the fluorescent block 8 is given sufficient light time.

In addition, the inner wall of the blind hole 3 is coated with a reflective coating to improve the utilization rate of light and enhance the display brightness. In this embodiment, the reflective coating is a reflective paint.

The working principle of this embodiment:

The display module 4 is hidden in the weighing platform 1, and when the display module 4 is not displayed, the weighing platform 1 is a whole, which does not appear abruptly as a weight scale, is easy to match the environment, and has a hidden layer effect.

When the user needs to measure the weight, the user approaches the weight measuring device. If the direction of the user approaching and standing on the weighing platform 1 is the correct direction, that is, approaching and standing on the weighing platform 1 from the bottom of FIG. 4, the human body detection module 52 After obtaining the user's information, it is sent to the processing module 6. After the processing module 6 determines that the user is standing in the correct direction, it starts the weighing function of the weight measuring device.

Next, the load cell 51 obtains the magnitude of gravity on the four corners, and then transmits it to the processing module 6. The processing module 6 analyzes the magnitude of gravity through a preset algorithm, comprehensively calculates the magnitude of gravity currently received, and weighs the The weighing result is sent to the driving circuit 41, and the driving circuit 41 converts the weighing result into display information, which is displayed through the display module 4. After the light-emitting LED is lit, it passes through the transparent inner wall of the blind hole 3 to the top side of the weighing platform 1. Send out, and then be observed by the human body.

When the display module 4 reaches the standard display time, the photochromic cover 81 becomes transparent, the light irradiates the fluorescent block 8, and the fluorescent block 8 starts to absorb light energy. When the display time of the display module 4 reaches the preset time, the display The module 4 stops lighting, and the fluorescent block 8 starts to emit light at this time, and continues to maintain the display effect for a period of time, which is more energy-efficient.

The above are only the preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited to the above-mentioned embodiments. All technical solutions under the idea of the present utility model belong to the protection scope of the utility model. It should be pointed out that for those of ordinary skill in the art, several improvements and modifications made without departing from the principles of the present utility model should also be regarded as the protection scope of the present utility model.

Claims

A weight measuring device, characterized in that it comprises a weighing platform (1) on which a user can stand, and also comprises

The human body detection module (52) is used to obtain the distance between the user and the weighing platform (1) in the set direction;

The weighing sensor (51) is used to obtain the weighing information of the user after it is started;

The processing module (6) is used to compare the distance between the user and the weight measuring device and the set value, and control the load cell (51) to start when the distance is less than the set value;

The display module (4) is used to display the weighing result.
The weight measuring device according to claim 1, wherein the human body detection module (52) is arranged in a direction opposite to the standing direction of the user.
The weight measurement device according to claim 2, wherein the human body detection module (52) comprises a BS45F3232 chip.
The body weight measuring device according to claim 1, wherein the bottom side of the weighing platform (1) is provided with an accommodating cavity (2), and the inner wall of the accommodating cavity (2) is provided with a plurality of weighing platforms. (1) A light-transmitting blind hole (3) on the top side, the display module (4) is arranged in the accommodating cavity (2) and displays the weight to the top side of the weighing platform (1) through the blind hole (3) result.
The weight measuring device according to claim 4, characterized in that the display module (4) comprises a plurality of light emitting LEDs arranged on the circuit board (13) and extending into the blind hole (3).
The weight measuring device according to claim 1, wherein the number of the weighing sensors (51) is 4, and they are respectively arranged at the corners of the weighing platform (1).
The weight measuring device according to claim 1, wherein the load cell (51) is electrically connected with a voltage stabilizing circuit (7) for providing a stable voltage to the load cell (51).
The weight measurement device according to claim 4, characterized in that: the inner wall of the blind hole (3) is provided with a fluorescent block (8), and the fluorescent block (8) is sheathed with a photochromic cover (81), so The photochromic cover (81) becomes transparent after being irradiated by the display module (4) for a standard duration, wherein the standard duration is less than the preset duration.
The body weight measuring device according to claim 8, wherein the inner wall of the blind hole (3) is coated with a reflective coating.